Terms of the Trade: What Is a Berm? Terms of the Trade: What Is a Berm?
When landscaping, a berm is often used to add height and variety to an otherwise flat area. In addition to their visual appeal, they can also redirect traffic, help control water flow and drainage, and block unappealing views. Berms are usually constructed with some sort of fill material, such as sand or plant debris, with plants or other garden features added on top.